Hi Pavel,
You might need to build the packages on your copr f34 (rawhide) now
again if it is easy to do.
Because there is new gcc-11 on rawhide now. And for example the
rubygem-mysql2 fails actually, but it was shown as a success on your
copr.
https://koschei.fedoraproject.org/package/rubygem-mysql2
--
Jun | He - His - Him